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Kinetic modeling of H2-assisted C3H6 selective catalytic reduction of NO over silver alumina catalyst

Muhammad Mufti Azis (Kompetenscentrum katalys (KCK) ; Institutionen för kemi och kemiteknik) ; Hanna Härelind (Kompetenscentrum katalys (KCK) ; Institutionen för kemi och kemiteknik, Teknisk ytkemi) ; Derek Creaser (Institutionen för kemi och kemiteknik, Kemisk reaktionsteknik ; Kompetenscentrum katalys (KCK))
Chemical Engineering Journal (1385-8947). (2014)
[Artikel, refereegranskad vetenskaplig]

A global kinetic model was developed for C3H6-SCR consisting of NO oxidation, C3H6 oxidation and C3H6-SCR reactions with and without H2 over Ag-Al2O3. The model is based on a dual role of H2 to remove inhibiting nitrates from the active sites as well as to modify/form new active Ag sites. For model development, a range of temperature programmed reaction (TPR) and transient feed experimental conditions were used. The proposed model was eventually also validated with additional transient experimental data. The kinetic model proposed in this study predicts the experimental data well for a wide-range of feed conditions. Evaluation of mass transfer resistance in the washcoat indicated that during H2-assisted C3H6-SCR, mild internal mass transfer resistance for NO was predicted to be important already at 250 °C.


doi:10.1016/j.cej.2014.10.057



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Denna post skapades 2015-03-23. Senast ändrad 2016-12-06.
CPL Pubid: 214150